Roof extractor DV/S...G

size: 190 - 710 mm (impeller diameter) vertical outlet highly efficient EC technology backward curved impellers mounted on/off switch solid weatherproof casing easy to install integrated control system (EC controller) speed is 100% infinitely variable integrated pressure sensor (type: pressure control) Base frames with threaded bolts for tightening of suction side accessories and retracted inlet cone made of galvanised sheet metal steel. Rain protective hood and square casing made of seawater-proof aluminium. Motor cage with integrated contact-protection made of plastic coated round bar steel. Housing with integrated sound insulation (S) for design DV(S)...G, DVE(S)...G and DVW(S)...G. Impellers Impellers are mounted directly to the rotor of the external rotor EC motor and are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11. model - DV(S)...G Backward curved impellers made of plastic. model - DVE(S)...G Efficiency optimized and sound optimized backward curved impellers of the REVOLUTION series made of plastic. model - DVW(S)...G Efficiency optimized backward curved impellers made of aluminum. up to size 225 The motors are equipped with a built-on terminal box with easy access for electrical connection after removal of the rain cover. from size 250 The electrical connection is possible over the mounted ON/OFF-switch. Type "open loop" In the “open loop” (standard) model, the speed is continuously provided by a 0-10V signal or a potentiometer (accessories). Type "closed loop" In the “closed loop” model, the pressure setpoint is continuously provided via a pre-wired potentiometer or a 0-10V signal.